<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品分类</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片式图 -->
    <el-card>
      <!-- 提示区 -->
      <el-alert title="添加商品信息" type="info" center show-icon :closable="false"></el-alert>
    </el-card>
    <!-- 步骤条 -->
    <el-steps :space="200" :active="activeIndex - 0" finish-status="success" align-center>
      <el-step title="基本信息"></el-step>
      <el-step title="商品参数"></el-step>
      <el-step title="商品属性"></el-step>
      <el-step title="商品图片"></el-step>
      <el-step title="商品内容"></el-step>
      <el-step title="完成"></el-step>
    </el-steps>
    <!-- 侧边栏 -->
    <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" label-position="top">
      <el-tabs v-model="activeIndex" :tab-position="'left'" :before-leave="beforeTabLeave" @tab-click="tabClicked">
        <el-tab-pane label="基本信息" name="0">
          <el-form-item label="商品名称" prop="goods_name">
            <el-input v-model="addForm.goods_name"> </el-input>
          </el-form-item>
          <el-form-item label="商品价格" prop="goods_price">
            <el-input v-model="addForm.goods_price"> </el-input>
          </el-form-item>
          <el-form-item label="商品重量" prop="goods_weight">
            <el-input v-model="addForm.goods_weight" type="number"> </el-input>
          </el-form-item>
          <el-form-item label="商品数量" prop="goods_number">
            <el-input v-model="addForm.goods_number" type="number"> </el-input>
          </el-form-item>
          <el-form-item label="商品分类" prop="good_cat">
            <!-- 级联选择器 -->
            <el-cascader v-model="addForm.goods_cat" :options="cateList" :props="cateprops" @change="handleChange"></el-cascader>
          </el-form-item>
        </el-tab-pane>
        <el-tab-pane label="商品参数" name="1">
          <!-- 动态参数 数组 渲染 -->
          <el-form-item :label="item.attr_name" v-for="item in manyTableDate" :key="item.attr_id">
            <!-- 复选框 -->
            <el-checkbox-group v-model="item.attr_vals">
              <el-checkbox :label="cb" v-for="(cb, i) in item.attr_vals" :key="i" border></el-checkbox>
            </el-checkbox-group>
          </el-form-item>
        </el-tab-pane>
        <el-tab-pane label="商品属性" name="2">
          <el-form-item :label="item.attr_name" v-for="item in onlyTableDate" :key="item.attr_id">
            <el-input v-model="item.attr_vals"></el-input>
          </el-form-item>
        </el-tab-pane>
        <el-tab-pane label="商品图片" name="3">
          <el-upload action="https://www.liulongbin.top:8888/api/private/v1/upload" :on-preview="handlePreview" :on-remove="handleRemove" list-type="picture" :headers="headerobj" :on-success="handleSuccess">
            <el-button size="small" type="primary">点击上传</el-button>
          </el-upload>
        </el-tab-pane>
        <el-tab-pane label="商品内容" name="4">
            <!-- 富文本编辑器 -->
            <quill-editor v-model="addForm.goods_introduce"></quill-editor>
            <el-button type="primary" class="btnAdd" @click="add">添加商品</el-button>
        </el-tab-pane>
      </el-tabs>
    </el-form>
    <!-- 图片预览 -->

    <el-dialog
  title="提示"
  :visible.sync="previewVisible"
  width="50%">
  <img :src="previewPath" alt="" class="previewImage" >
</el-dialog>
  </div>
</template>

<script>
import _ from 'lodash'
export default {
  data () {
    return {
      activeIndex: '0',
      addForm: {
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        goods_cat: [],
        pics: [],
        goods_introduce: '',
        attrs: []
      },
      // 级联选择器的保存
      cateprops: {
        label: 'cat_name',
        expandTrigger: 'hover',
        value: 'cat_id',
        children: 'children'
      },
      // 动态参数数组
      manyTableDate: [],
      // 静态属性列表
      onlyTableDate: [],
      // 请求分类数据保存
      cateList: [],
      // 处理图片预览的显示的
      previewPath: [],
      // 图片上传组件的
      headerobj: {
        Authorization: window.sessionStorage.getItem('token')
      },
      // 显示图片上传预览的
      previewVisible: false,
      // 级联选择器存放的数值
      addFormRules: {
        goods_name: [{ required: true, message: '请输入商品名称', trigger: 'blur' }],
        goods_price: [{ required: true, message: '请输入商品名称', trigger: 'blur' }],
        goods_weight: [{ required: true, message: '请输入商品名称', trigger: 'blur' }],
        goods_number: [{ required: true, message: '请输入商品名称', trigger: 'blur' }],
        good_cat: [],
        attrs: []
      }
    }
  },
  created () {
    this.getCateList()
  },
  methods: {
    async getCateList () {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$message.error('请刷新网页')
      } else {
        this.cateList = res.data
        console.log(this.cateList)
      }
    },
    // 级联选择器改变
    handleChange () {
      console.log(this.addForm.goods_cat)
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = []
      }
    },
    // 切换标签页的函数
    beforeTabLeave (activeName, oldActiveName) {
      if (oldActiveName === '0' && this.addForm.goods_cat.length !== 3) {
        this.$message.error('请选择商品分类!')
        return false
      }
    },
    async tabClicked () {
      // console.log(this.activeIndex)
      if (this.activeIndex === '1') {
        const { data: res } = await this.$http.get(`categories/${this.cateID}/attributes`, { params: { sel: 'many' } })
        if (res.meta.status !== 200) {
          return this.$message.error('请求失败')
        }
        console.log(res.data)
        res.data.forEach((item) => {
          if (item.attr_vals.length !== 0) {
            item.attr_vals = item.attr_vals.split(' ')
          } else {
            item.attr_vals = []
          }
        })
        this.manyTableDate = res.data
      }
      if (this.activeIndex === '2') {
        const { data: res } = await this.$http.get(`categories/${this.cateID}/attributes`, { params: { sel: 'only' } })
        if (res.meta.status !== 200) {
          return this.$message.error('请求失败')
        }
        this.onlyTableDate = res.data
      }
    },
    // 处理图片预览
    handlePreview (file) {
      console.log(file)
      this.previewPath = file.response.data.url
      this.previewVisible = true
    },
    // 移除图片
    handleRemove (file) {
      const filePath = file.response.data.tmp_path
      const i = this.addForm.pics.findIndex(x => x.pic === filePath)
      this.addForm.pics.splice(i, 1)
      console.log(this.addForm)
    },
    // 上传图片成功返回的数据
    handleSuccess (response) {
      // console.log(response)
      const picInfo = { pic: response.data.tmp_path }
      //
      this.addForm.pics.push(picInfo)
      console.log(this.addForm)
    },
    // 验证表单然后提交
    add () {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) {
          return this.$message.error('请填写必要的表单项')
        }
        // 添加相应的业务逻辑
        const form = _.cloneDeep(this.addForm)
        form.goods_cat = form.goods_cat.join(',')
        // 处理 动态参数 和静态属性
        this.manyTableDate.forEach(item => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(' ')
          }
          this.addForm.attrs.push(newInfo)
        })
        this.onlyTableDate.forEach(item => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals
          }
          this.addForm.attrs.push(newInfo)
        })
        form.attrs = this.addForm.attrs
        console.log('-----------------')
        console.log(form)
        console.log('--------------')
        // console.log(this.addForm)

        const { data: res } = await this.$http.post('goods', form)
        if (res.meta.status !== 201) {
          return this.$message.error('失败')
        }
        this.$router.push('/goods')
      })
    }
  },
  computed: {
    cateID () {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      }
      return null
    }
  }
}
</script>

<style lang="less" scoped>
.el-checkbox {
  margin: 0 5px 0 0;
}
.previewImage{
    width: 100%;
}
.btnAdd{
    margin-top: 15px;
}
</style>
